FILE - In this March 29, 2017 file photo, FBI Director James Comey speaks in Alexandria, Va. Don't expect Comey to reveal much about the bureau's months-long investigation of potential coordination between the Trump campaign and Russia when he speaks publicly before members of Congress on Wednesday, May 3, 2017. (AP Photo/Cliff Owen, File)

“While the case for removal of Federal Bureau of Investigation Director James Comey laid out by Deputy Attorney General Rod J. Rosenstein was thorough, his removal at this particular time will raise questions. It is essential that ongoing investigations are fulsome and free of political interference until their completion, and it is imperative that President Trump nominate a well-respected and qualified individual to lead the bureau at this critical time.”

— U.S. Sen. Bob Corker, R-Tennessee

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“Dem response should be easy–call for independent investigation, remind voters of the last POTUS to fire someone while under investigation.”